The GCF is 7.
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The greatest common factor of 42, 49 and 84 is 7.
48 and 84's highest common factor is 12.
The Least Common Multiple (LCM) for 28 49 and 84 is 588.The Greatest Common Factor (GCF) for 28 49 and 84 is 7.
12
The highest common factor of 60 and 84 is 12